Acetylene-lamp.



A. L. HANSEN.

ACETYLENE LAMP.

APPLICATION FILED AUG.28. 191s.

Patent-ed May1,1917.

IITE $TATE PATET @FFIQ.

AUGIE L. HANSEN, OF EVANSTON, ILLINOIS, ASSIGNOR TO JUSTRITE MANUFAC TUR- ING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ACETYLENE-LAMP.

Application filed August 28, 1916.

To all whom it may concern.

Be it known that I, Aooin L. HANSEN, a citizen of the United States, and a resident of Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Acetylene- Lamps, of which the following is a speci fication.

My invention relates to acetylene lamps and involves important features of construction and operation.

Mine lamps to which my invention refers usually comprise a water container and a carbid container with a water tube extending downwardly from the water container. In prior structures such water tube usually extends a considerable distance from the water container in order to bring its end well into the carbid when the carbid container is coupled to the water container. With this arrangement the end of the water tube must be crammed into the carbid when a freshly charged carbid container is applied and such cramming action may interfere with proper application of the carbid container in getting it properly centered in the receiving socket on the water container, this being particularly true where the coupling between the containers is in the form of threading. If the water tube does not extend entirely to the carbid there will be an over-abundance of water fed to the carbid before sufficient gas pressure will be generated to hold back the water.

In general the object of my invention is to overcome the above defects in prior structures. More in detail, the object is to pro vide a water tube which is short enough to be above the ordinary level of the freshly charged carbid when the carbid container is coupled to the lamp body, and to provide means at the lower end of the water tube for cooperating with slaked carbid to-check the flow of water immediately after the first few drops have been delivered.

On the accompanying sheet of drawings I have shown a lamp embodying the features of my invention. On this drawing-'- Figure 1 is a vertical di'ametrical sectional view of the lamp body and carbid container, the water tube being shown in full,

Fig. 2 is an enlarged sectional View of the lower end of the lamp body and the carbid container and water tube Specification of Letters Patent.

Patented May 1, 1917.

Serial No. 117,127.

Fig. 3 is a view of the inside of the carbid container receiving socket, and

Fig. 1- is a top view of the carbid container.

The miners cap lamp shown on the drawing comprises a water container 5 and the carbid container 6. One end of the water containeris closed by a reflector 7 and the opposite end has a hook 8 and the clamp 9 for supporting the lamp on a cap. At the lower part of the water container is the cylindrical socket 10 for receiving the reduced neck 11 of the carbid container, the lower end of the socket flaring to form the flange 12 which is parallel with the beveled shoulder '13 of the carbid container, a washer 14 being inserted between the shoulder and flange to form a sealing fit when the containers are brought together. Any means may be provided for securing the containers to ether. As shown a shallow cup member 15 is secured to the top of the socket 10 and has the lower sections of its side walls deflected outwardly to form semi-circular helically extending ledges 16 and 17, and the upper edge of the carbid container neck is deflected inwardly and bent to form semicircular helically extending flanges 18 and 19. V'Vhen the carbid container is inserted in the socket and then turned the helical flanges and ledges will engage and will draw the carbid container into the socket to compress the washer 14 between the flange- 12 and the shoulder 13. A tube 20 extends through the top of the socket 10 and the cup 15 and deflects laterally to extend axially through the refiector and seats a burner tip 21 at its outer end. To strain the gas passing from the carbid container into the tube 20 an annular strainer frame 22 of cup shaped cross-section may be secured in the cup 15 to communicate at its open rear end with'the tube, the gas being caused to pass through the small straining openings 23 before it can reach the tube.

Extending vertically through the water container and axially through the socket 10 is the water tube 24 which is contracted at its lower end to form a valve seat 25 surrounding the water outlet 26. In the tube is the cylindrical valve stem 27 having the conical valve end 28 for cooperating with the seat 25, the stem at its upper end having the turning handle 29. The water tube has also the spirally extending slot into which a pin 31 extends from the valve stem and from the upper end of the spiral slot the vertical slot 32 extends to the upper end of the water tube. With this arrangement when the stem is turned while the pin is in the spiral slot the stem will be raised and lowered to open and close the valve outlet 26 and when the valve reaches the vertical slot 32 the stem may be withdrawn from the water tube. Near the bottom of the water container the water tube has the water inlet 33. In order to retard the flow of water through the water tube to the outlet 26 the valve stem at its lower end has the spiral groove 34 cut therein, this groove together with the water tube wall forming the long spiral water passageway or duct 35 through which the water must pass before it reaches the outlet 26.

In accordance with my invention the lower end 36 of the water tube below the outlet 26 is flared to form a conical or other shaped hood. In practice when the carbid container is re-charged it is filled about half full of carbid, and the length of the water tube is such that the hood 36 will be above the carbid when the carbid container is secured to the water container. With this arrangement any cramming or pressure between the end of the tube and the carbid will be prevented and the carbid container can therefore more readily be centered and screwed into the water container socket. Ordinarily if the water tube terminated above the carbid and the valve were then opened there would be an over-abundance of water flow to the carbid before the gas pressure would become sufficient to check the flow of the water, but with the'hood terminus of my invention such excess of water flow is prevented. As soon as water drops from the outlet 26 to the carbid the carbid will become moist and will quickly swell and slake and the resulting powdery mass will be quickly shoved upwardly into the hood and will act somewhat like blotting paper to retard the flow of water before there can be excess flow. The swelling carbid below the hood will continually keep the hood filled with the slaked carbid and thus during the continued operation of'the lamp the water will flow uniformly in just sufiicient quantity to cause the gas pressure to be kept up in the carbid container to produce the proper sized flame at the burner tip. The flaring hood will also cause lateral distribution of the water so that the carbid will be more uniformly'supplied with moisture.

I preferably provide an agitator 87 in the hood, the agitator shown being in the form of a length of flexible metal cable secured in and extending downwardly from the lower end of the valve stem and through the valve outlet 26. If at any time more water flow is desired to get a larger flame the valve stem is turned to cause the agitator to shift the material within the hood. Immediately after such agitation fresh material will be forced into the openings caused by the agitation and excess flow of water will be prevented and the pressure will be kept uniform. Should the pressure at any time become too great gas can readily work its way through the material in the hood and upwardly through the passageway and through inlet into the water container from where it can pass to the exterior through the slot 32, or through vents 38 in the filling opening plug The lamp described is particularly adaptable for miners use as it requires practically no attention after it has been charged and started, the slaked material in the hood causing uniform and laterally extended distribution of water to the carbid and preventing excess water flow after the lamp is started, and also preventing sudden discharge of water to the carbid when the lamp is bumped or jarred during its use by the miner. Furthermore, as the water tube terminates above the normal level of the carbid there is nothing to interfere with the rapid and accurate centering of the tube in its receiving socket.

I do not, ofcourse, desire to be limited to the exact construction and arrangement shown and described as changes and modifications are no doubt possible which would still come within the scope of the invention.

I claim as follows:

1. In an acetylene lamp, the combination with a water container, of a carbid container, a water tube extending from the water container into the carbid container and terminating in an inverted cup-shaped extension, said extension being above the normal level of fresh carbid charged into the carbid container whereby slaked and powdered carbid will be forced into the extension to retard and distribute the flow of water to the car bid to thereby maintain uniform pressure in the carbid container, and a burner tip connected to receive the gas from the carbid container.

2. In an acetylene lamp, the combination of a water container, a carbid container, a water tube extending from the water container into the carbid container and having a water outlet, a valve within the tube controlling said outlet, the lower end of said water tube flaring to form an inverted on below said outlet and said cup terminating above the normal level of carbid charged into the carbid container whereby when said outlet is opened to permit water to flow to the carbid the slaked and powdered carbid will be forced into said cup to' thereafter control the flow of Water to the carbid to maintain uniform pressure in the carbid container.

3. In an acetylene lamp, the combination of a water container, a carbid container, a water outlet from the water container to the carbid container, walls below said outlet terminating above the normal level of fresh carbid in the carbid container and forming a pocket into which slaked and powdered carbid is forced after initial water flow to thereafter act as a retarder for the water flow.

a. In an acetylene lamp, the combination of a water container, a carbid container, a water outlet between the water container and carbid container, an inverted cup communicating with and below said outlet and terminating substantially at the normal level of fresh carbid in the carbid container whereby the slaked and powdered carbid caused by the first flow of water will be forced into the cup to'thereafter regulate and control the flow of water to the carbid to maintain uniform pressure in the carbid container.

In an acetylene lamp, the combination of a water container, a carbid container, a water outlet between the containers, an inverted conical cup secured to the water container below the outlet and terminating substantially at the normal level of fresh carbid in the carbid container whereby slaked and powdered carbid caused by the first flow of water will be forced into said cup to thereafter regulate and distribute the water flow to the carbid and to maintain uniform pressure in the carbid container.

6. In an acetylene lamp, the combination of a water container, a carbid container, a water tube extending from the water container into the carbid container and terminating above the normal level of fresh carbid in the carbid container, a water valve in said tube, and means at the lower end of said tube for receiving and retaining slaked or powdered carbid for controlling and regulating the flow of water to the unslacked carbid.

7. In an acetylene lamp, the combination of a water container, a carbid container, a water tube extending from the water container to the carbid container and having a water outlet, a valve in said tube for controlling said outlet, and an inverted cupshaped extension at the lower end of said tube into which slaked and powdered carbid is forced below said outlet.

8. In an acetylene lamp, the combination of a water container, a carbid container, a water tube extending from the water container to the carbid container and having a water outlet, avalve for said outlet, the lower end of said tube below said outlet being flared to form an inverted cup for re ceiving slaked and powdered carbid.

9. In an acetylene lamp, the combination of a water container, a carbid container, and a water tube extending from the water container into the carbid container, the lower end of said tube being wide open for the ready passage thereinto of slaked or powdered carbid.

10. In an acetylene lamp, the combination of a water container, a carbid container, a water tube extending from the water container to the carbid container and having an outlet, means within the tube above said outlet for resisting the flow of water therethrough, and an inverted cup-shaped extension on the tube below said outlet for receiving slalred and powdered carbid.

In witness whereof I hereunto subscribe my name" this 25th day of August, A. 1).,

' AUGIE L. HANSEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

